Injector.



J. MORET Y GONZALES.

INJECTOR.

APPLICATION FILED JULY 9,1913. Patented Dec. 22, 1914.

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THE NORRIS PETERS 5a.. FHDlO-LITHO s'mvn h s 17 J. MORET Y GONZALES.

INJECTOR. APPLIOATION FILED JULY 9, 1913.

QJW. Patented Dec. 22, 1914.

2 SHEETS-SHEET 2.

(gill wimp-I WW 'HE NORRIS PYETERS CO., PHOTG-LITHIl. WASHINGTON. D. F

INJECTOR.

Specification of Letters Patent.

Patented Dec. 22, 1914.

Application filed July 9, 1913. Serial No. 778,060.

'jector which is simple in construction and reliable in operatic j Another object is to provide aninjector the internal parts of which may be readily removed without disconnecting the injector from the piping.

Another object is to provide an injector with an improved starting device.

@ther objects and the features of novelty will be apparent from the following description taken in connection with the accom- 'Fig. 1; Fig. 3 1s a transverse section on the panying drawings, in which a Figure 1 is a longitudinal section of the injector embodying my improvements; Fig. 2 is a transverse section on the line 22 of line 3-3 of Fig. 1; Fig. 4 is an end elevation of a modified form of the starting device, and Fig. 5 is a section on the line 55 of Fig. 4.

Referring to the drawings, 10 indicates the body or casing of the injector which is provided with the steam inlet 11, the water inlet 12 and the outlet 13, these inlets and the outlet being preferably screw-threaded to facilitate connection with the usual piping. The casing is also provided with an overflow outlet 14 which is connected with the overflow chamber 15 by suitable ports or I channels 16', the latter extending around and being separated from the discharge chamber 17 by means of a wall 18. The outlet 13 is provided with a valve cage 19 for the usual check valve 20. The latter being for the purpose of preventing back-flow from the boiler when the injector is not in operation. The water inlet 12 connects with a chamber 20 formed between the trans be introduced and this opening is closed by a bonnet 26 in which is slidably arranged the stem 27 of a valve 28, this valve being adapted to engage a seat 29 at the rear end of the member 23 and out oil? the supply of steam to the interior of said member. The valve stem 27 passes through a stufiing box by the bonnet 26. The steam inlet 11 communicates with a chamber 31 in which is arranged the end of the member 23 and from which steam is supplied to the nozzle 24. The member 23 is provided with a bore 32 which is arranged parallel with the bore 24 and at one side thereof and has comunication at its rear end with the chamber 20, and at its forward end with the chamber 33. The member 23 is also provided with a bore 34 which constitutes a steam nozzle for delivering steam to the bore 33, the latter acting as a combining tube forthe water and steam and constituting the priming or starting injector. The member 23 has a recess 35 with which the nozzles 24 and 34 communicats.

The valve stem 27 is provided with a central bore 36 in which is arranged a plunger 37 and aspring 38, the latter tending to force the plunger 37 forwardly. The plunger 37 has connected therewith a stem 39 which slides through a nut 40 secured in the end of the stem 27, the stem 39 carrying a valve 41 adapted to engage a seat 42 in the member 23, and cut ofi the steam from the nozzle 24. The stem 27 is connected with a rod 43 by means of a yoke 44, this rod passing through a tube 45 which bridges the steam inlet 11. The rod 43 has rigidly connected therewith a valve 46 which is adapted to engage a seat 47 at one side of the chamber 15. A port 48 connects an annular space 49 around the'rod 43 with the chamber 33 so that when the valve 46 is off its seat the chamber 15 will be in communication with the chamber 33. The rod 43 also has adjustably arranged thereon the valve 50 which is adapted to engage a seat 51 in the wall 52 which separates the chamber 15 from the chamber 17. The casinglO is provided with an opening 53 in line with the rod 43 through which the rod and the valves 46 and 50 may be passed. The opening 53 is closed by a suitable plug 54. The outer diameter of the valve 46 is slightly smaller than the opening in the wall 52 for the valve 50 so that the rod 43 can be readily .30 of any suitable construction and carried removed from the'injector by disconnecting it from the yoke 44, it only being necessary to remove the nut 55 for this purpose. The chambers 17 and 33 are separated by a wall 56 which is-provided with an openlng in which is secured the usual combining and forcing tube 57, this tube being in axlal alinement with the nozzle 24 and in commu nication at its rearward end with the chamber 33 by an annular space 58 surrounding the forward end of the nozzle 24. The cage 19 is provided with an axial bore 59 in axial alinement with the bore of the tube 57 so that water discharged from the tube will pass through the bore 59 and strike the valve 20 and passing the latter will flow on to the'boiler or other point of use. For the purpose of actuating the valves to start or A stop the injector I provide a handle 60, the

lower end of which is forked in the usual way and pivotally connected at 61 with the yoke 44. The lower end of the lever 60 is pivotally connected with a link 62 which. in turn is secured at its forward end to a post or bracket 63 carried by the casing 10.

The parts are shown in Fig. 1 in the position which they assume when the injector is operating. Toshut off the injector the lever 60 is moved forwardly carrying with it the yoke 44, and the valves 28, 41, 46 and 50. The opening of the valves 46 and places the i chambers 17 and33 in communication with g and forcing the overflow chamber 15. In moving the handle 60 to close the valves the valve 41 engages the seat-42 before the valve 28 engages the seat 29. Steam will thus be first cut off from the nozzle 24 but will continue to fiow through the nozzle 34 delivering water into the chamber 33 which will escape through the port 44 and the annular passage 49 to the chamber 15. Asv soon as the valve 41 is seated the valve 20 will be closed by the back-flow or water from the boiler and further movement of the handle 60 will causethe spring 36 to be compressed, the construction shown permitting the valve 28 to be brought to its seat after the valve 41 is closed. When the valve 28 reaches its seat 29 steam will be cut off from the nozzle 34 and the injector will be out of operation. To start the injector the handle 60 is drawn to the rear, this movement first opening the valve '28 and permitting steam to flow through the nozzle 34. The steam from the nozzle 34 passes through the tube 32 and draws water up through the inlet chamber 20and forces it into the chamber 33 where it will either flow through the combining to the chamber 15 and then out through overflowoutlet 14. Further movement of the handle 60 opens the valve 41 and permits steam to flow through the nozzle 24, this steam combining with the water in the tube 5.7 and forcing the latter aheadinto tube 57 or through the port 48 the chamber 17. The water overflows from the chamber 17 to the chamber 15 and when the water delivered by the combining and forcing tube reaches the required velocity it will open the valve 20 against the boiler pressure and the water will thereafter flow to the boiler. The handle is then moved to seat valves 46 and 50 and thus close the overflow passages.

In Fig. l I have shown the member 23 as provided with a single nozzle 34 and combining tube 32.

In Figs. 4 and 5 I have illustrated a modification in which the member 23 is provided with two nozzles 34 and 34", and also two combining tubes 32 and 32 Otherwise the member 23 is similar to the member 23.

This construction gives a larger capacity to the injector by increasing the quantity of water delivered to the chamber 33.

It will be observed from the drawings that all of the interior parts of the injector are readily accessible for renewal or repair without disconnecting the injector casing from the piping.

While I have illustrated what I now consider to be the preferred form of my invention I am aware that various changes may be made in the details of construction without departing from my invention, as set forth in the claims. Therefore I do not wish to be limited to the exact details as shown and described.

What I claim is:

1. In an injector, the combination of a casing having transverse walls separating the casing into different chambers, said walls having alined openings therein, a combining and forcing tube secured in one of said openings, and a nozzle member secured in two of said walls and bridging the chamber between said walls, said nozzle member having a passage in alinement with said combining and forcing tube and closed to said chamber.

2. In an injector, the combination of a casing having a plurality of transversely extending walls separating the interior of the easing into different chambers, alined openings in said walls and an end wall of the casing, a combining and forcing tube secured in one of said walls, a nozzle for said tube secured in two of said walls and bridging the space between the walls and adapted tobe removed through the opening in the end wall, and a closure for the opening in the end wall said nozzle member having a passage in alinement with said combining and forcing tube and closed to said chamber.

3. In an injector, the combination of a I steam chamber, a plurality of water chambers and a discharge chamber, a lifting tube adapted to deliver water from one of said water chambers to the other, a combining and forcing tube communicating with said valves adapted to close communication between the steam chamber and said nozzles, and means for operatlng sald valves 1n succession whereby the steam is received by the nozzle for the lifting tube in advance of the nozzle for the combining tube.

4:. In an injector, the combination of a lifting tube, a combining and forcing tube at oneside of said lifting tube, nozzles for delivering steam to said tubes, a valve for shutting off the supply of steam to the nozzle for the combining and forcing tube, a second valve for shutting off the supply of steam to both nozzles, means common to both valves for operating them and adapted to open the second mentioned valve in advance of the first. 1

5. In an injector, the combination of a combining and forcing tube, a nozzle therefor, and a lifting tube and nozzle formed in the Wall of the nozzle for the combining and forcing tube.

6. In an injector, the combination of. a combining and forcing tube, a nozzle member associated therewith, and a plurality of lifting tubes formed in the Wall of said nozzle. I

In testimony whereof I afiix my signature in presence of tWo Witnesses.

JOAQUIN MORET Y GONZALES.

WVitnesses J. F. PATTON, L. M. OBRIEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents,

Washington, D. 0. 

